The research, which looked at nearly 500,000 adults between the ages of 38 and 73, found that getting too much sleep – as well as too little – was linked with worse mental health, such as anxiety and depression, as well as poorer brain performance.
Article source: https://www.huffingtonpost.co.uk/entry/why-too-much-sleep-is-bad-for-health_uk_626ba5f0e4b0cca675546c23